Road-engine.



,-H. N. GOVELL & J. H. DICKINSON.

' ROAD ENGINE.

- APPLICATION FILED APR. 6, 1906. 933,825, Patented Sept. 14,1909.

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H. N. GOVBLL &: J. H. DICKINSON.

ROAD ENGINE. APPLICATION FILED APR.5,1906.

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UNITED sTATEs PATENT" oniuon.

HARRY N. COVELL, OF BROOKLYN, NEW YORK, AND JOSEPH H. DICKINSON, OFMONT- CLAIR, NEW JERSEY; SAID OOVELL ASSIGNOR TO LIDGERWOODMANUFACTURING COMPANY, A CORPORATION OF NEW YORK.

ROAD-ENGINE.

Specification of Letters Patent. Patented Sept. 14, 1909.

Application filed April 5, 1906. Serial No. 310,044.

To all whom it may concern:

Be it known that we, HARRY N. CovnLL, a citizen of the United States,and a resident of Brooklyn, in the county of Kings and State of NewYork, and J OSEPH H. DICKIN- SON, a resident of Montclair, in the countyof Essex and State of New Jersey, have invented certain novel and usefulImprovements in Road-Engines, of which the following is a specification.

This invention is applicable to what is technically known as a roadengine which is a rope-drum engine designed for pulling logs longdistances, frequently over a mile.

It generally consists of a large powerfully geared pulling or inhauldrum which is the forward drum and a speeded outhaul drum, which is theback drum. A special road engine is sometimes built of two outhaul drumsmaking three drums in all.

The road engine does not gather logs at the point where the tree is cutdown. The logs are brought to the pulling line of the road engine byyarding engines or other methods and the road engine then pulls one logor several logs known as a turn of logs to the landing where they areloaded upon the cars thus requiring a very long, powerful and steadypull. The work required of these road engines is peculiar. It is obligedto handle two ropes, one of which, the inhaul or pulling rope, is forhauling in the logs and is frequently a mile or more in length, which ifan inch in diameter and a mile in length, will weigh over 8000 pounds.The other, or outhaul rope, passes around a distant pulley and isrequired to outhaul the pulling or inhaul rope together with log grabsand connections to the point at which the logs are taken. This outhaulrope has to be double the length of the inhaul rope and is of relativelysmall size.

When the inhaul rope is wound upon the drum, its enormous weighttogether with the weight of the drum, frequently makes a combined weightof over 14000 ounds, even with a road engine of small size, upon thedrum bearing and great difficulty has been experienced under thesecircumstances from the wearing out of the bearings. The enormous pullrequired of this drum necessitated that it be geared for great power andthis has heretofore imposed such an extreme strain upon the friction andfor such extended lengths of time, as to require special appllances forpreventing the friction from slipping and preventing the frictionsetting mechanism from heating. Another difficulty has been in the sizeof the inhaul drum to attain the necessary high speed of outhaul andalso the friction between the inhaul drum and its oppositely rotatingshaft during the outhaul operation.

The object of our present invention is to obviate, severally andcollectively, the above mentioned difiiculties in this class of engines.

Our invention consists in the construction, combination and arrangementof parts set forth in and falling within the scope of the appendedclaims.

In the annexed drawings wherein we have illustrated one embodiment ofour invention, Figure 1 is a plan view of a road engine embracing ourimprovements; Fig. 2 is a side View of the same; Fig. 3 is a detail viewpartly in section of the mechanism for operating the clutch on the powershaft; Fig. 4 is a detail view of such power shaft clutch and the drivepinion connected thereto.

In the accompanying drawings, 1 is the frame; 2 the boiler; 3, thecylinders, and 4, the crank shaft of the engine, the other details ofwhich are omitted.

5 is the inhaul drum containing the flanges 6 and 7 and fixed to thespur wheel 8 and the brake wheel 9. These constitute substantially aunitary structure keyed to the shaft 10 which revolves in bearings onthe frame. Since the space between the frame bearings is occupied onlyby the drum and its flanges and the spur wheel and brake wheel, the drummay be made of maximum length so as to accommodate the long rope whichit iscalled upon to handle. Since the bearings for the shaft 10 of thisdrum are stationary bearings upon the frame, the friction is due only tothe motion between a moving and stationary part and the bearings can belubricated in the best manner. Therefore, the friction in wear and tearproduced by the enormous weight of the drum and its contained rope isreduced to a minimum.

11 is a narrow brake-band cooperating with the brake-wheel 9 andoperated by the lever 12. For driving the spur wheel 8 and its inhauldrum 5, we provide the pinion 13 upon a sleeve rotatably mounted uponthe crank shaft 4 and fixed to this pinion is the friction clutch member14 cooperating with the inverse clutch member 15 splined to the crankshaft 4. For setting and unsetting the friction members 14, 15, weprefer to employ a nut 16 screwthreaded to a collar 17 on the shaft 4,which collar bears against the fixed abutment 1.8. The nut 16 isoscillated by the arms 19 and 20 from the shaft 21 which is controlledby the hand lever 22.

In practice, the spur wheel 8 and pinion 18 will be geared down as lowas about 7 1 so as to obtain great pulling power. 'Since the frictionconnection 14, 15 is interposed between the shaft 4 and the pinion 13instead of between the drum 5 and its spur wheel 8, we can increase thediameter of the friction clutch 14, 15, to any extent desired beyond thediameter of the pinion and can, therefore, avoid the necessity of severepressure in setting the clutch to make it hold and, therefore, avoid thefriction which has heretofore produced so much difliculty in the clutchsetting mechanism. In practice, we prefer to make the diameter of theclutch 14, 15, about three times that of the pinion 13. The outhaul drum23, its flanges 24 and 25 and clutch member 26 are rotatably loose uponthe drum shaft 27 and are held by the brake band 28. The inverse clutchmember 29 and spur wheel 30 to which it is connected are keyed fast tothe shaft 27 and are driven by the pinions 31 keyed fast to the crankshaft 4. 32 is the lever by which the brake band 28 is set, and 83 thelever by which the drum is thrust endwise so as to set the frictionclutch 26, 29.

By having the spur wheels 30 and 8 driven from separate pinions, theratio between the spur wheel 30 and the pinion 31 may be regulated tosecure any desired high speed for the drum 23, and thus with a smallcircumference of the drum 23 and a correspondingly cheap and lightweight drum, the requisite high speed of outhauling may be attained. Ifdesired, a winch head 34 may be fixed on the end of the shaft 27 outsidethe frame.

Among the many advantages of our road engine may be set forth thefollowing: 1. It is powerful where power is required and speedy wherespeed is required. 2. By transferring the friction clutch from the drumshaft 10 to the shaft 4, the drum 5 can be made longer, the bearingsupon which the drum 5 rotates are simplified and rendered comparativelyfrictionless and the clutch is enabled to dominate the movements of thedrum with less clutch setting pressure and less friction in the clutchsetting mechanism and the registering of the clutch members isunaffected by any wear in the bearings carrying the enormous weight ofthe drum 5 and its rope. '3. The diameter and weight of the outhaul drum23 may be reduced to a minimum and still the requisite high peed ofouthaul be maintained" 4. These road engines are, in use, mounted upon asled and by our construction, the friction clutch is relieved from theweight of the inhaul drum and its rope in case the sled leans toward thefriction side.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is: 7

1. An engine, comprising an outhaul drum, an inhaul drum, a power shaft,means carried by said power shaft for placing such shaft in and out ofdriving engagement with the inhaul drum, and means carried by theouthaul drum for placing the latter inv and out of engagement with thepower shaft. I 2. An engine comprising an out-haul drum, an in-hauldrum, a gear wheel for said inhaul drum and pinion clutch mechanisminterposed between said drums and adapted to be placed in and out ofoperative engagement with the in-haul'drum. 7

3. An engine comprising an outhaul drum, an inhaul drum, a power shaft,a friction clutch on the power shaft for connecting and disconnectingthe latter and the inhaul drum, and a friction clutch mechanism car riedby the outhaul drum for connecting and. disconnecting the latter and thepower shaft. 4. An engine, comprising a plurality of drums each having arelatively large gear wheel, said gear wheels being arranged at oppositeends of their respective shafts, a

power shaft, pinions carried by said power shaft for engagement withsaid gear wheels. respectively, clutch mechanism carried by the powershaft for placing one of said pin ions in and out of driving engagementwith one of said gear wheels, a clutch mechanism carried by the drumhaving the other gear wheel for placing such ,drum'in and'out .ofengagement with said power shaft. g i

5. An engine comprising an outhaul drum and an in-haul drum, a powershaft interposed between said drums, a gear for each of said drums andarranged at opposite ends, pinions carried by the power shaft andmeshing withthe gears of the drums, a. friction clutch mechanism on thepower shaft for placing one ofsaid pinions in and out of drivingengagement with the adjacent gear wheel of the in-haul drum, and clutchmechanism carried by the out-haul drum for placing said. out-haul druminto and out' of driving engagement with the power shaft.

6. An engine having. a drum formed with a relatively long rope bed, asecond drum having ,a relatively short rope bed, a power shaft, clutchmechanism carried by said power shaft for placing the latter in and outof driving engagement with the drum having a relatively long rope bed, aclutch mechanism carried by the drum With a relaconnecting said powershaft with the drum having a relatively short rope bed to drive saiddrum at a comparatively high speed and comparatively low power.

8. An engine having two drums, one having a relatively long rope bed.and the other a relatively short rope bed, a power shaft,

frictionally operated power multiplying mechanism for connecting saidpower shaft with one of said drums, and means for connecting said shaftwith the other of said drums.

9. An engine having an inhaul drum, an outhaul drum, a power shaft, agear wheel for each of said drums, pinions on said power shaft formeshing with said gear wheels, and frictionally operated powermultiplying mechanism carried by said power shaft for placing one ofsaid pinions on the power shaft in driving engagement with the gearwheel of the in-haul drum to operate the inhaul drum;

10. An engine comprising two drums, a gear wheel carried by each of saiddrums and at opposite ends, a power shaft, pinions on said power shaftfor engagement with said gears, a friction clutch on said shaft forplacing one of said pinions into and out of operative engagement withthe gear, braking mechanism located on the outside of one of said gearsand braking mechanism located inside of the gear of the other drum.

11. An engine comprising two drums, a power shaft, a gear wheel for eachof said drums, clutch mechanism on said power shaft adapted to beshifted into and out of operative engagement with one of said gearwheels, and a band brake located on the outside of said gear.

one of said pinions in and out of driving 7 engagement with an adjacentgear, and clutch mechanism carried by one of the drums for placing theadjacent pinion into and out of driving engagement with said drum.

' 13. An engine comprising an inhaul drum and an outhaul drum, saidinhaul drum being keyed fast to a drum shaft revolving in bearings onthe bed of the engine, a power shaft, a pinion carried by said powershaft adapted to be placed in and out of engagement with the gear of theinhaul drum, and frictionally operated mechanism for actuating saidpinion.

14. An engine, having a drum formed with a relatively long rope-bed, asecond drum formed with a relatively short ropebed, a gear wheel foreach drum, means coacting with said gears for driving the drums, abraking device for one of said drums arranged outside the gear wheelthereof, and a braking mechanism for the other drum located at a pointinward of the gear of said drum.

15. An engine having a rope-drum formed with a relatively long rope-bed,a

second drum formed with a relatively short' rope-bed, means for drivingone of said drums at comparatively high speed and with relatively lowpower, and means for driving the other drum at comparatively low speedand with relatively high power.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

HARRY N. COVELL. JOSEPH H. DICKINSON.

Witnesses:

It. B. CAVANAGH, WALTER A. PAULING.

Correctioncin Letters. Patent No. 933,825.

it is hereby certified that in Letters Patent No. 933,825, grantedSeptember lat, 1909, upon the application of Harry N. Covell, ofBrooklyn, New York, and

Joseph H. Dickinson, of Montclair, New Jersey, for an improvement inRoad- Engines, an error appears in the printed specification requiringcorrection as follows: Page 1, line 59, for the word inhaul readout/amt; and that the proper correction has been made in the tiles andrecords of the Patent Ofiice, and is hereby made in said Letters Patent.i

Signed and sealed this 26th day of October, A. D., 1909.

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